Directional information conveying method and apparatus
US5157382A · kind A · utility
10Cited by
4References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1990 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Oct 18, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60Q1/381
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Information as to a direction(s) to be followed to avoid a hazard is unambiguously transmitted by energizing lamps of an array in accordance with stored data whereby unique sequential flash patterns are generated. A selectable pattern includes a long initial flash followed by a plurality of relatively short flashes which progress in stepwise fashion in the direction of desired observer motion, the pattern ending with a terminal lamp of the array being flashed repetitively. The pattern is then caused to repeat after an off time which is of long duration relative to at least the short flashes of the pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.